Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uunet!sjsca4!molehill!poffen
From: poffen@molehill (Russ Poffenberger)
Newsgroups: comp.sys.ibm.pc
Subject: Re: A question about hard disk
Message-ID: <1989Dec21.170822.2006@sj.ate.slb.com>
Date: 21 Dec 89 17:08:22 GMT
References: <7799@portia.Stanford.EDU>
Reply-To: poffen@sj.ate.slb.com (Russ Poffenberger)
Distribution: usa
Organization: Schlumberger ATE, San Jose, CA
Lines: 21

In article <7799@portia.Stanford.EDU> meric@portia.Stanford.EDU (meric ozcan) writes:
>
>I have a 60 Mbytes Seagate hard disk (ST-277R-1, RLL type) with autopark
>feature. When the power is turned off there is some strange sound coming
>from the hard disk and it lasts about 5 seconds. It is not the whining
>sound  from the motor. I have never heard this kind of sound from any
>other hard disk. I will try to describe the sound:
>	After you turn off a fan, while it is spinning if you put a stick
>between the fan blades you would get a similar sound. 
>I am really curious about this. Does anyone have any idea?   Thanks.


Ny st251 also does this. I presume the autoparking mechanism uses disk
momentum in a mechanical operation of some kind to park the heads. The noise
is that mechanical action.

Russ Poffenberger               DOMAIN: poffen@sj.ate.slb.com
Schlumberger Technologies       UUCP:   {uunet,decwrl,amdahl}!sjsca4!poffen
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